The Alexandrian calendar is the primary calendar used by most nations of the world. The start of the Alexandrian calendar is the start of 336 BC, the year of Alexander the Great's acession to the Macedonian throne. The year has twelve months, each named for an Olympian god, with an extra day added between the months of Athena and Apollo (6th and 7th months respectively) every four years named Alexander. The current year in the Alexandrian calendar is 2350 and the month is Hera.